| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens which can emit light in various forms, while using one light source. SOLUTION: The lens 11 of this invention is provided at a position which is in contact with the light source (LED12) and is constituted of a projection- shaped absorbing plane 11A, having a horizontally viewing area covering the horizontally viewing area of the light source and curvature with which light emitted from the light source converging to a light source optical axis, a first reflecting plane 11B which is provided at the rear surface side of the absorbing plane 11A and the upper end of which is inclined outside toward the light source optical axis, in order to bend the light converged to the light source optical axis outside toward the light source optical axis and a second reflection plane 11c which is provided outside the first reflecting plane 11B with a prescribed distance and the upper end of which is inclined outside, in order to make the light reflected by the first reflecting plane 11B to be in parallel with the light source optical axis or to be diffused therefrom or to be converged thereto. |
